From ab4d635b92b116b02b88843b4ec4f5b7517bab1a Mon Sep 17 00:00:00 2001 From: Stefan Metzmacher Date: Mon, 26 Sep 2005 11:47:55 +0000 Subject: r10504: - seperate implementation specific stuff, from the generic composite stuff. - don't use SMBCLI_REQUEST_* state's in the genreic composite stuff - move monitor_fn to libnet. NOTE: I have maybe found some bugs, in code that is dirrectly in DONE or ERROR state in the _send() function. I haven't fixed this bugs in this commit! We may need some composite_trigger_*() functions or so. And maybe some other generic helper functions... metze (This used to be commit 4527815a0a9b96e460f301cb1f0c0b3964c166fc) --- source4/libcli/smb_composite/connect.c | 396 +++++++++++++++++++++++++++++++++ 1 file changed, 396 insertions(+) create mode 100644 source4/libcli/smb_composite/connect.c (limited to 'source4/libcli/smb_composite/connect.c') diff --git a/source4/libcli/smb_composite/connect.c b/source4/libcli/smb_composite/connect.c new file mode 100644 index 0000000000..56d9d988c3 --- /dev/null +++ b/source4/libcli/smb_composite/connect.c @@ -0,0 +1,396 @@ +/* + Unix SMB/CIFS implementation. + + Copyright (C) Andrew Tridgell 2005 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ +/* + a composite API for making a full SMB connection +*/ + +#include "includes.h" +#include "libcli/raw/libcliraw.h" +#include "libcli/composite/composite.h" +#include "libcli/smb_composite/smb_composite.h" + +/* the stages of this call */ +enum connect_stage {CONNECT_RESOLVE, + CONNECT_SOCKET, + CONNECT_SESSION_REQUEST, + CONNECT_NEGPROT, + CONNECT_SESSION_SETUP, + CONNECT_TCON}; + +struct connect_state { + enum connect_stage stage; + struct smbcli_socket *sock; + struct smbcli_transport *transport; + struct smbcli_session *session; + struct smb_composite_connect *io; + union smb_tcon *io_tcon; + struct smb_composite_sesssetup *io_setup; + struct smbcli_request *req; + struct composite_context *creq; +}; + + +static void request_handler(struct smbcli_request *); +static void composite_handler(struct composite_context *); + +/* + setup a negprot send +*/ +static NTSTATUS connect_send_negprot(struct composite_context *c, + struct smb_composite_connect *io) +{ + struct connect_state *state = talloc_get_type(c->private_data, struct connect_state); + + state->req = smb_raw_negotiate_send(state->transport, lp_maxprotocol()); + NT_STATUS_HAVE_NO_MEMORY(state->req); + + state->req->async.fn = request_handler; + state->req->async.private = c; + state->stage = CONNECT_NEGPROT; + + return NT_STATUS_OK; +} + + +/* + a tree connect request has competed +*/ +static NTSTATUS connect_tcon(struct composite_context *c, + struct smb_composite_connect *io) +{ + struct connect_state *state = talloc_get_type(c->private_data, struct connect_state); + NTSTATUS status; + + status = smb_raw_tcon_recv(state->req, c, state->io_tcon); + NT_STATUS_NOT_OK_RETURN(status); + + io->out.tree->tid = state->io_tcon->tconx.out.tid; + if (state->io_tcon->tconx.out.dev_type) { + io->out.tree->device = talloc_strdup(io->out.tree, + state->io_tcon->tconx.out.dev_type); + } + if (state->io_tcon->tconx.out.fs_type) { + io->out.tree->fs_type = talloc_strdup(io->out.tree, + state->io_tcon->tconx.out.fs_type); + } + + /* all done! */ + c->state = COMPOSITE_STATE_DONE; + + return NT_STATUS_OK; +} + + +/* + a session setup request has competed +*/ +static NTSTATUS connect_session_setup(struct composite_context *c, + struct smb_composite_connect *io) +{ + struct connect_state *state = talloc_get_type(c->private_data, struct connect_state); + NTSTATUS status; + + status = smb_composite_sesssetup_recv(state->creq); + NT_STATUS_NOT_OK_RETURN(status); + + state->session->vuid = state->io_setup->out.vuid; + + /* setup for a tconx */ + io->out.tree = smbcli_tree_init(state->session, state, True); + NT_STATUS_HAVE_NO_MEMORY(io->out.tree); + + state->io_tcon = talloc(c, union smb_tcon); + NT_STATUS_HAVE_NO_MEMORY(state->io_tcon); + + /* connect to a share using a tree connect */ + state->io_tcon->generic.level = RAW_TCON_TCONX; + state->io_tcon->tconx.in.flags = 0; + state->io_tcon->tconx.in.password = data_blob(NULL, 0); + + state->io_tcon->tconx.in.path = talloc_asprintf(state->io_tcon, + "\\\\%s\\%s", + io->in.called_name, + io->in.service); + NT_STATUS_HAVE_NO_MEMORY(state->io_tcon->tconx.in.path); + if (!io->in.service_type) { + state->io_tcon->tconx.in.device = "?????"; + } else { + state->io_tcon->tconx.in.device = io->in.service_type; + } + + state->req = smb_raw_tcon_send(io->out.tree, state->io_tcon); + NT_STATUS_HAVE_NO_MEMORY(state->req); + if (state->req->state == SMBCLI_REQUEST_ERROR) { + return state->req->status; + } + + state->req->async.fn = request_handler; + state->req->async.private = c; + state->stage = CONNECT_TCON; + + return NT_STATUS_OK; +} + +/* + a negprot request has competed +*/ +static NTSTATUS connect_negprot(struct composite_context *c, + struct smb_composite_connect *io) +{ + struct connect_state *state = talloc_get_type(c->private_data, struct connect_state); + NTSTATUS status; + + status = smb_raw_negotiate_recv(state->req); + NT_STATUS_NOT_OK_RETURN(status); + + /* next step is a session setup */ + state->session = smbcli_session_init(state->transport, state, True); + NT_STATUS_HAVE_NO_MEMORY(state->session); + + state->io_setup = talloc(c, struct smb_composite_sesssetup); + NT_STATUS_HAVE_NO_MEMORY(state->io_setup); + + /* prepare a session setup to establish a security context */ + state->io_setup->in.sesskey = state->transport->negotiate.sesskey; + state->io_setup->in.capabilities = state->transport->negotiate.capabilities; + state->io_setup->in.credentials = io->in.credentials; + state->io_setup->in.workgroup = io->in.workgroup; + + state->creq = smb_composite_sesssetup_send(state->session, state->io_setup); + NT_STATUS_HAVE_NO_MEMORY(state->creq); + if (state->creq->state == COMPOSITE_STATE_ERROR) { + return state->creq->status; + } + + state->creq->async.fn = composite_handler; + state->creq->async.private_data = c; + state->stage = CONNECT_SESSION_SETUP; + + return NT_STATUS_OK; +} + + +/* + a session request operation has competed +*/ +static NTSTATUS connect_session_request(struct composite_context *c, + struct smb_composite_connect *io) +{ + struct connect_state *state = talloc_get_type(c->private_data, struct connect_state); + NTSTATUS status; + + status = smbcli_transport_connect_recv(state->req); + NT_STATUS_NOT_OK_RETURN(status); + + /* next step is a negprot */ + return connect_send_negprot(c, io); +} + +/* + a socket connection operation has competed +*/ +static NTSTATUS connect_socket(struct composite_context *c, + struct smb_composite_connect *io) +{ + struct connect_state *state = talloc_get_type(c->private_data, struct connect_state); + NTSTATUS status; + struct nbt_name calling, called; + + status = smbcli_sock_connect_recv(state->creq); + NT_STATUS_NOT_OK_RETURN(status); + + /* the socket is up - we can initialise the smbcli transport layer */ + state->transport = smbcli_transport_init(state->sock, state, True); + NT_STATUS_HAVE_NO_MEMORY(state->transport); + + make_nbt_name_client(&calling, cli_credentials_get_workstation(io->in.credentials)); + + nbt_choose_called_name(state, &called, io->in.called_name, NBT_NAME_SERVER); + + /* we have a connected socket - next step is a session + request, if needed. Port 445 doesn't need it, so it goes + straight to the negprot */ + if (state->sock->port == 445) { + status = nbt_name_dup(state->transport, &called, + &state->transport->called); + NT_STATUS_NOT_OK_RETURN(status); + return connect_send_negprot(c, io); + } + + state->req = smbcli_transport_connect_send(state->transport, &calling, &called); + NT_STATUS_HAVE_NO_MEMORY(state->req); + + state->req->async.fn = request_handler; + state->req->async.private = c; + state->stage = CONNECT_SESSION_REQUEST; + + return NT_STATUS_OK; +} + + +/* + called when name resolution is finished +*/ +static NTSTATUS connect_resolve(struct composite_context *c, + struct smb_composite_connect *io) +{ + struct connect_state *state = talloc_get_type(c->private_data, struct connect_state); + NTSTATUS status; + const char *address; + + status = resolve_name_recv(state->creq, state, &address); + NT_STATUS_NOT_OK_RETURN(status); + + state->creq = smbcli_sock_connect_send(state->sock, address, state->io->in.port, io->in.dest_host); + NT_STATUS_HAVE_NO_MEMORY(state->creq); + + state->stage = CONNECT_SOCKET; + state->creq->async.private_data = c; + state->creq->async.fn = composite_handler; + + return NT_STATUS_OK; +} + + +/* + handle and dispatch state transitions +*/ +static void state_handler(struct composite_context *c) +{ + struct connect_state *state = talloc_get_type(c->private_data, struct connect_state); + + switch (state->stage) { + case CONNECT_RESOLVE: + c->status = connect_resolve(c, state->io); + break; + case CONNECT_SOCKET: + c->status = connect_socket(c, state->io); + break; + case CONNECT_SESSION_REQUEST: + c->status = connect_session_request(c, state->io); + break; + case CONNECT_NEGPROT: + c->status = connect_negprot(c, state->io); + break; + case CONNECT_SESSION_SETUP: + c->status = connect_session_setup(c, state->io); + break; + case CONNECT_TCON: + c->status = connect_tcon(c, state->io); + break; + } + + if (!NT_STATUS_IS_OK(c->status)) { + c->state = COMPOSITE_STATE_ERROR; + } + + if (c->state >= COMPOSITE_STATE_DONE && + c->async.fn) { + c->async.fn(c); + } +} + + +/* + handler for completion of a smbcli_request sub-request +*/ +static void request_handler(struct smbcli_request *req) +{ + struct composite_context *c = talloc_get_type(req->async.private, + struct composite_context); + state_handler(c); +} + +/* + handler for completion of a smbcli_composite sub-request +*/ +static void composite_handler(struct composite_context *creq) +{ + struct composite_context *c = talloc_get_type(creq->async.private_data, + struct composite_context); + state_handler(c); +} + +/* + a function to establish a smbcli_tree from scratch +*/ +struct composite_context *smb_composite_connect_send(struct smb_composite_connect *io, + struct event_context *event_ctx) +{ + struct composite_context *c; + struct connect_state *state; + struct nbt_name name; + + c = talloc_zero(NULL, struct composite_context); + if (c == NULL) goto failed; + + state = talloc(c, struct connect_state); + if (state == NULL) goto failed; + + state->sock = smbcli_sock_init(state, event_ctx); + if (state->sock == NULL) goto failed; + + state->io = io; + + c->state = COMPOSITE_STATE_IN_PROGRESS; + c->event_ctx = talloc_reference(c, state->sock->event.ctx); + c->private_data = state; + + state->stage = CONNECT_RESOLVE; + make_nbt_name_server(&name, io->in.dest_host); + state->creq = resolve_name_send(&name, c->event_ctx, lp_name_resolve_order()); + + if (state->creq == NULL) goto failed; + state->creq->async.private_data = c; + state->creq->async.fn = composite_handler; + + return c; +failed: + talloc_free(c); + return NULL; +} + +/* + recv half of async composite connect code +*/ +NTSTATUS smb_composite_connect_recv(struct composite_context *c, TALLOC_CTX *mem_ctx) +{ + NTSTATUS status; + + status = composite_wait(c); + + if (NT_STATUS_IS_OK(status)) { + struct connect_state *state = talloc_get_type(c->private_data, struct connect_state); + talloc_steal(mem_ctx, state->io->out.tree); + } + + talloc_free(c); + return status; +} + +/* + sync version of smb_composite_connect +*/ +NTSTATUS smb_composite_connect(struct smb_composite_connect *io, TALLOC_CTX *mem_ctx, + struct event_context *ev) +{ + struct composite_context *c = smb_composite_connect_send(io, ev); + return smb_composite_connect_recv(c, mem_ctx); +} -- cgit